电流型谐振逆变器负载调频调功方案

Changes Load Frequency Adjustment Output Power of Current-source Resonant Inverter

通过简化负载为CLC的电流型逆变器电路得到负载等效电路图,分析负载参数间电压、电流的关系,以及功率、负载谐振频率的关系,采用一种全解析的方法,推导出调整功率的公式。利用VBA开发出一套计算负载参数的小软件,以方便工程上对不同输出功率负载参数的设计。利用Matlab绘制了相应的负载曲线,理论证明了负载电压电流的关系。最后经由实验验证了通过改变负载参数和谐振固有频率,可以实现功率调节,与软件计算结果相符。

By simplifying the current-source inverter CLC circuit,it gets the load equivalent circuit.By analyzing the load parameters relationships between the voltage and current,power and resonant frequency,a new analyzing and designing method is provided,which is derived a formula to adjust output power.The VBA is used to develop a soft-ware to calculate load parameters when adjusting power,which is facilitate the engineering to design.The load current and voltage curves are drawn with Matlab.The simulation and experimental results show the relationships between the voltage and current.Finally experiment verificates as the load parameters different,the resonant frequency change,achieve the power regulation,which is consistent with the software calculation.